10-22-2018, 08:59 AM | #1 |
Enlisted Member
10
Rep 46
Posts |
Exhaust Valve on 540i Msport
Hi guys
I want to try and remove the valve/flap on the right exhaust so that it remains open in all modes at all times. I dont have the skills to do it myself (wee, the space mainly), so i was wondering how to go about it. I asked Sytner when i got it new to do it but they said it would affect the warranty so they didnt. Any help would be appreciated. Thanks! |
10-22-2018, 09:46 AM | #2 |
Major
376
Rep 1,223
Posts |
__________________
2018 M550iX-Dinan Stage 1 | 2011 E93 M3 Convertible | 2002 E46 M3 Convertible | 2002 E53 X5 3.0 | 2000 E39 540i | 1998 E36 M3 | 1988 E28 M5 | 1987 E28 528i
|
Appreciate
0
|
10-23-2018, 03:46 AM | #3 | |
Enlisted Member
10
Rep 46
Posts |
Quote:
|
|
Appreciate
0
|
10-23-2018, 11:09 AM | #4 | |
Enlisted Member
10
Rep 46
Posts |
Quote:
Thanks |
|
Appreciate
0
|
10-23-2018, 11:59 AM | #5 |
Major
376
Rep 1,223
Posts |
May be a M550iX thing. 540 flap may only open under heavy acceleration.
__________________
2018 M550iX-Dinan Stage 1 | 2011 E93 M3 Convertible | 2002 E46 M3 Convertible | 2002 E53 X5 3.0 | 2000 E39 540i | 1998 E36 M3 | 1988 E28 M5 | 1987 E28 528i
|
Appreciate
0
|
10-23-2018, 02:02 PM | #6 |
Enlisted Member
10
Rep 46
Posts |
|
Appreciate
0
|
10-26-2018, 05:27 PM | #7 | ||
Lieutenant
85
Rep 479
Posts |
Quote:
The flap opens on mid/heavy throttle, On any mode. I don't think it opens on drive modes buttons
__________________
LeXxiNGToN aka LeXxDiAMoNDS
|
||
Appreciate
0
|
10-27-2018, 04:59 PM | #8 | |
Colonel
1116
Rep 2,073
Posts |
Quote:
I did try the mechanical method (cable tie) on mine to keep the flap open, and it was still pretty quiet and civilized on idle (after the initial start up raor which is not flap related), and also sounded the same when accelerating hard (because the flap would have been open anyway). When cruising, there was not a noticeable difference either. So I put everything back as it felt rather pointless. |
|
10-28-2018, 12:17 PM | #9 | ||
Lieutenant
85
Rep 479
Posts |
Quote:
I had a "14" x5 3.5 Stage1 with OEM flap exhaust and When i hit boost hard then shifted 1st-2nd around 4K rpm the whiplash sound that came out was effff'in crazy where people got scared. I was hoping these B58M setup did the same. Pretty Wack I can't make the same shift sound with this OEM flap.
__________________
LeXxiNGToN aka LeXxDiAMoNDS
|
||
Appreciate
0
|
02-07-2019, 09:38 AM | #11 |
First Lieutenant
110
Rep 314
Posts |
|
Appreciate
0
|
02-07-2019, 12:39 PM | #12 | |
Private First Class
10
Rep 156
Posts |
Quote:
|
|
Appreciate
0
|
02-07-2019, 03:12 PM | #14 |
Private First Class
10
Rep 156
Posts |
|
Appreciate
0
|
02-07-2019, 07:05 PM | #16 |
First Lieutenant
110
Rep 314
Posts |
|
Appreciate
0
|
05-06-2019, 12:02 PM | #17 |
Seeking mental floss
482
Rep 806
Posts |
I just tried the fuse thing. Had to blip to 4K in Sport Plus to get the valves to open. Verified by feeling exhaust from both pipes each side. The fuse diagram doesn't look anything like my car. Pulled what appeared to be the only 7.5A fuse on the fusebox (I'm not an electrical engineer). Didn't work. Finally noticed the diagram folded in the fuse box, which shows exactly where 203 is. Pulled it. Thanks for the help.
Last edited by hlothery; 05-06-2019 at 12:20 PM.. |
Appreciate
0
|
05-07-2019, 09:59 AM | #18 |
Captain
663
Rep 642
Posts |
I just opened my flap yesterday. Removed the spring clip with a pair of needle nose pliers and wired it open with some 12 gauge electrical wire, twisting it tight with a larger pair of regular pliers. Took 5 minutes; little skill required. Hoping for a little improvement in sound but no change that I could discern. Going to add an M Performance exhaust sometime soon I think. --Bob
__________________
2019 540xi M Sport, Carbon Black/Cognac, 2014 328xi, 2016 Corvette Z06; Previous:2010 BMW 535xi M Sp, 2008 335xi, 1998 M3 Sedan,1980 528i, 1977 320i, 1976 2002
|
Appreciate
0
|
05-07-2019, 10:24 AM | #19 | |
New Member
29
Rep 28
Posts |
Quote:
|
|
Appreciate
0
|
05-07-2019, 10:27 AM | #20 | |
Captain
663
Rep 642
Posts |
Quote:
__________________
2019 540xi M Sport, Carbon Black/Cognac, 2014 328xi, 2016 Corvette Z06; Previous:2010 BMW 535xi M Sp, 2008 335xi, 1998 M3 Sedan,1980 528i, 1977 320i, 1976 2002
|
|
Appreciate
1
NCMMichael29.00 |
Post Reply |
Bookmarks |
|
|